Home / 20,288.46-30,424.38-8,434.12

Finding the Fourth Proportional to 20,288.46, 30,424.38 and 8,434.12

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Solution

The fourth proportional to 20,288.46, 30,424.38 and 8,434.12 is: 12,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.46 : 30,424.38 = 8,434.12 : x
  2. Step 2: Convert to fraction form
    20,288.46/30,424.38 = 8,434.12/x
  3. Step 3: Cross multiply
    20,288.46x = 30,424.38 × 8,434.12
  4. Step 4: Simplify right side
    20,288.46x = 256,602,871.85
  5. Step 5: Solve for x
    x = 256,602,871.85/20,288.46
  6. Step 6: Final answer
    x = 12,647.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.